Xie Qingci is the spirit maiden who guards the mountains of Yunhuang, bound by a cruel destiny: if she falls in love, her spiritual power will vanish and her soul will be scattered. She has spent a century in solitude, guarding the barrier and protecting all living beings across the Three Realms. Then the banished immortal Xie Linyuan wanders into Yunhuang. They fall for each other at first sight and find salvation in one another. They love each other deeply, yet dare not draw near; to stay together is to invite death. As turmoil grips Yunhuang, demons wreak havoc and border communities suffer. If she gives in to love, all life will perish; if he defies Heaven, catastrophe will engulf the world. There are no misunderstandings or bitter quarrels, only an impossible choice sealed by fate. She forsakes love to protect all living beings, while he spends his immortal essence to keep her safe. The cruelest thing in this world is not separation, but that Yunhuang allows love for all living beings, and forbids a love that runs too deep.
